test/test_tomopy/test_prep/test_alignment.py
#!/usr/bin/env python
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from __future__ import (absolute_import, division, print_function,
unicode_literals)
import os.path
import unittest
from numpy.testing import assert_allclose
from ..util import read_file
from tomopy.prep.alignment import distortion_correction_proj\
, distortion_correction_sino, load_distortion_coefs
__author__ = "Nghia Vo"
__copyright__ = "Copyright (c) 2019, UChicago Argonne, LLC."
__docformat__ = 'restructuredtext en'
class DistortionCorrectionTestCase(unittest.TestCase):
def test_distortion_correction_proj(self):
test_dir = os.path.dirname(os.path.realpath(__file__))
file_path = os.path.join(
os.path.dirname(test_dir),'test_data','discoef.txt')
(xc, yc, list_fact) = load_distortion_coefs(file_path)
assert_allclose(
distortion_correction_proj(
read_file('distortion_3d.npy'), xc, yc, list_fact)[0],
read_file('distortion_proj.npy'), rtol=1e-2)
def test_distortion_correction_sino(self):
test_dir = os.path.dirname(os.path.realpath(__file__))
file_path = os.path.join(
os.path.dirname(test_dir),'test_data','discoef.txt')
(xc, yc, list_fact) = load_distortion_coefs(file_path)
assert_allclose(
distortion_correction_sino(
read_file('distortion_3d.npy'), 5, xc, yc, list_fact),
read_file('distortion_sino.npy'), rtol=1e-2)